In his dissertation titled Understanding Archean crustal evolution of the Saglek Block using geochemical and isotopic data, the candidate presented the results of analyses of different generations of gneisses and granitoids sampled from outcrops located between Saglek Bay and Hebron Fjord. Particular attention was given to the oldest rocks (ca. 3.72 Ga), classified as Uivak I gneiss, as well as younger granitoids and granodiorites dated to ca. 3.3 Ga.

The aim of the study was to better understand how the earliest continental crust formed and what magmatic and metamorphic processes shaped it over billions of years. The author used modern analytical methods, including whole-rock geochemistry, U-Pb zircon geochronology, and oxygen isotope analysis, which provide insights into the thermal conditions and presence of water during rock formation. The results shed new light on how the first continents formed and what early Earth might have looked like.

The dissertation was highly praised by the reviewers, who appreciated the comprehensive approach, precise geochronological data, and the contribution to understanding the evolution of early continental crust. The candidate demonstrated a strong command of modern research techniques and the ability to interpret complex geological data.

Following the presentation and the discussion session, the Committee accepted the dissertation and positively evaluated the defense, recommending the award of the degree of Doctor of Earth Sciences to Mr. Tanmay Keluskar.